Finding the Third Proportional to 172,287 and 365,031.38

Step by Step Solution

1. Step 1: Write the proportion equation
   172,287 : 365,031.38 = 365,031.38 : x
2. Step 2: Convert to fraction form
   172,287/365,031.38 = 365,031.38/x
3. Step 3: Cross multiply
   172,287x = 365,031.38 × 365,031.38
4. Step 4: Simplify right side
   172,287x = 133,247,904,734.39
5. Step 5: Solve for x
   x = 133,247,904,734.39/172,287
6. Step 6: Final answer
   x = 773,406.61